lkml.org 
[lkml]   [2006]   [Dec]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] WorkStruct: Implement generic UP cmpxchg() where an arch doesn't support it
Hi,

On Wed, 6 Dec 2006, Linus Torvalds wrote:

> > > Any _real_ CPU will simply never care about _anything_ else than just the
> > > size of the datum in question.
> >
> > ..or alignment which a dedicated atomic type would allow to be attached.
>
> Can you give any example of a real CPU where alignment matters?
>
> Sure, it needs to be naturally aligned, but that's true of _any_ type in
> the kernel. We don't do unaligneds without "get_unaligned()" and friends.

m68060 produces a trap for unaligned atomic access, unfortunately standard
alignment is smaller than this.

bye, Roman
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-12-07 02:29    [W:0.067 / U:1.576 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site